Improved process for tanniwg



Parent warren.

cnson A. non, or'cnantnsrown, onto;

lWlPlriClVED PROGESS Specification forming part of Letters Patent eon TANNHNG.

No. 5%,222, dated October 3, 1865.

To all whom it may concern:

Be it known that I, ORSON A. 00E, of

)Uharlestown, in the county of Portage and State of Ohio, have invented a new and Improved Tanning Irocess; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to fully understand and make use of the same.

This invention relates toa process which is equally applicable to tanning light skins with wool, hair, or foron, or to tanning hides or skins for leather.

- First. Forihe purpose ot'tanning light hides with wool, hair, or furon, I first soak and flesh them' in the usual manner. I then make a solution of boiled and mashed potatoes, rye or oat bran, common salt, and oxalic acid in Water, said ingredients being mixed together in about the following proportion: Soft warm water, eight gallons; potatoes, boiled and mashed, one quart; rye or cat bran,eight quarts; common salt, five pounds; oxalic acid, one-halt pound. l stir the potatoes and bran together with the water in the proportion above specified, and let it stand in a warm room till it ferments. I then add the salt, stirring until it is dissolved, and, finally, under continuous agitation, I add the oxalic acid. This solution, which I term the first solution," imparts no color to the leather or furs.

sumac, melted catechu, and kino.

Second. lhor heavy hides or skins, such as calf-skins or cow-hides, I add to the abovenamed solution a liquid made of the buds of These ingredients are mixed together in aboutthe following" proportion: Extract of the butts of sumac, onequart; melted catechu or Sicily su-- mac, three pounds;' lgino or cranes bill, onefourth pound. This solution, which I term the second solution, acts on the leather similar to, heniloclchark. it plumps and gives it a body for boots and harness-leather Light hides re quire to be handled from thii-lgr minutes to one hour. Then they are rinsed in soft warm water and hung out to dry in the shade.

. Third. For hides or skins from which the hair or wool is to be taken on, i make a liquor as follows: soft water,ten gallons; slack-lime,

one-fourth bushel; hard-wood'ashes, one-fourth bushel. Inthis liquor,\vhich I term the third solution, I handle the hides or skins once or twice each day till the hair or wool comes oti'. This opens the pores and raises the hide or skin. I then wash out the lime and ashes in the following bathing-liquor: soft water, four gallons; fermented bran-liquor, four gallons; sour m'ilkgtwo gallons The hides or skins are kept in this liquor for from six to twelve hours and handled or worked out on the beam twice. Then (if a shade is required) I put the hides in the heavy-leather tan-liquor. Fourth. Thehides or skins should be handled as often as twice each'day until tanned, being from flirty-eight hours to eight days, according to the thickness of the hide or skin. I then rinse first in clean water, and afterward soak the hides in equal parts of solt water and skimmed milk from two to sixteen hours. This solution kills the acid in the leather. 1 stuff, or fill the hide with stuffing.

What I claim as new, and ,desire to secure by Letters Patent, is-- J. The first solution herein described and Finally,

composed of the ingredients described under third solutions, all made and used substan-.

tiallyas and for the purposes described.

onson A. con.

Witnesses U. B. CURTISS, EDWIN HOLDEN. 

